100. MAESILEACE^. 101. LYCOPODlACEiE. 431 
— Height 4 — 12 in., erect. Spike clubshaped, iisiiallY rather 
longer than the frond, sometimes vei-y long. — Pastures. P. V. 
VI. E. S. I. 
[0. lusitan'mtm (L.) ; frond lineai'-laneeolate. — N. ed. 3. .331. 
S. 47. — Height 1 — 2 inches, erect. — Petit Bo Bav, Guemsev. 
3Ir. G. Wolseij. P. 1.] 
Order C. MAIISILEACE^. 
Creeping plants with alternate erect leaves, circinate in bud. 
Fmetification consisting of globular nearly sessile coriaceous 
bodies vnth 3 or 4 cells and containing sacs including either 
other bodies that germinate or loose gi-anules. 
1. PiLULARiA. Involucres solitary, nearly sessile, globose, 
coriaceous, 4-celled. Cells containing bodies of two kinds : 
granules, and membranes containing mmute grains. 
1. Pilitla'ria Linn. Pillwort. 
1. P. globulifera {!,.).— E.B. 521. N. 393.— Rhizome slender, 
creeping, producing leaves and roots at regular intervals. L. very 
slender, erect. Inv. slightly stalked, axillary, nearly spherical, 
hairy. — Margms of ponds and lakes. P. " E. S. I. 
Order CI. LTCOPODIACE^. 
Leafy plants with simple imbricate leaves ; or stemless with 
erect subulate leaves. Fructification of axiUary sessile capsules 
with 2 or 3 valves and no ling, including minute powdery matter 
or sporules. 
* Capsules not opening. — Leaves radical. 
1. IsoETES. Caps, in pouches formed of the swollen bases of 
the leaves. Sporides of two kinds attached to filiform 
receptacles ; those of the outer leaves large, of the inner 
very smaU. 
** Capsules bursting. — With Imfy stems. 
2. LTCOPODitTM. Caps. 1-celled, 2-valved, containing pow- 
der ; or 3-valved, containing 1 — 4 granules. 
1. IsoETES Linn. Quillwort. 
* No pei-sistent leaf-bases. Caps, not wholly covered by the 
membranous edge of the pouch. Back of swollen leaf-base 
smooth. — Aquatic. 
1. I. lacus'tris (L.); 1. subulate roundish -quadrangular with 4 
